这是代码:
import cv2
import numpy
cap = cv2.VideoCapture(0)# 调整参数实现读取视频或调用摄像头
while 1:
ret, frame = cap.read()
cv2.imshow("cap", frame)
if cv2.waitKey(100) & 0xff == ord('q'):
break
cap.release()
cv2.destroyAllWindows()
这是错误图片:
[ WARN:0@0.385] global D:\a\opencv-python\opencv-python\opencv\modules\videoio\src\cap_msmf.cpp (539) `anonymous-namespace'::SourceReaderCB::~SourceReaderCB terminating async callback
Traceback (most recent call last):
File "D:\Learn\PyCharm\Test\OP.py", line 44, in <module>
cv2.imshow("cap", frame)
cv2.error: OpenCV(4.5.5) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'
请大佬们帮帮忙
如果不是内置的摄像头就把0改成其它数字
附:暴力找设备号
import cv2
ID = 0
while(1):
cap = cv2.VideoCapture(ID)
# get a frame
ret, frame = cap.read()
if ret == False:
ID += 1
else:
print(ID)
break
谢谢大佬